Which of the following class of materials are good conductors of heat and electricity?
A.Metals
B.Ceramics
C.Polymers
D.Dielectries
Author: BILAL KHATTAK
In a S.I. engine high air velocity through air hom may be of the order of
A.1 m/s
B.5 m/s
C.10 m/s
D.50 m/s
E.100 m/s
Which of the following does not use ambient air for propulsion?
A.Turbo jet
B.Pulse jet
C.Turbo-prop
D.Rocket
Tumbling is done to
A.Clean the surface of small parts
B.Stress relieve the components
C.Get surface finish
D.To plate the surface
E.To break the material into pieces
The performance of a windmill rotor is indicated by plotting the variation of
A.coefficient of performance against tip speed ratio
B.maximum power available in the wind against wind speed
C.power delivered by the rotor against wind speed
D.maximum power available in the wind against speed at the tip of the rotor
The method used for testing of lubricating oil is:
A.Viscosity test
B.Flash fire test
C.Pour point test
D.All are correct
Cold and hot stratification is:
A.To activate dormant embryo
B.To help after ripening of embryo
C.Moist stratification is done at temperature varying from 0 – 10
D.All of the above
For identical feed composition, flow rate, conversion and for all positive reaction orders, the ratio of volumes of the mixed reactor to the plug flow reactor is
A.always one
B.always less than one
C.always greater than one
D.equal to the order of reaction.
Which of the following theory believed that origin of family is based on the philosophy of possession of women by men?
A.Multi-factor theory
B.Polygamy theory
C.Theory of sex communism
According to ISA 315, which of the following is NOT a control activity??
A. Performance reviews
B. Physical controls
C. Organizational structure
D. Segregation of duties
